<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>类vs元素选择器</title>
	<style>
	.f_c {
		background:red;
	}
	a {
		background:#ff8800;
	}
	</style>
</head>
<body>
	<a href="http://www.taobao.com" class="f_c">淘宝</a>
	<a href="http://www.baidu.com" class="f_c">百度</a>
</body>
</html>